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Cichliformes (Cichlids, convict blennies) >
Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Trematochromis: Greek, trematos = hole + Greek, chromis, = a fish, perhaps a perch (Ref. 45335).
Issue
The correct allocation to Haplochromis or Ctenochromis is pending further taxonomic studies (Ref. 57075).
Environment: milieu / climate zone / depth range / distribution range
Écologie
; eau douce benthopélagique; pH range: 7.4 - 8.4; dH range: 7 - 30. Tropical; 23°C - 27°C (Ref. 13614); 3°S - 6°S
Africa: northern part of Lake Tanganyika (Ref. 4983).
Taille / Poids / Âge
Maturity: Lm ? range ? - ? cm
Max length : 21.5 cm TL mâle / non sexé; (Ref. 4983)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Épines dorsales (Total) : 16 - 18; Rayons mous dorsaux (Total) : 8 - 10; Épines anales: 3; Rayons mous anaux: 7 - 8. Body deep and moderately compressed (Ref. 57075). Presence of a thick sensory canal on the six infraorbitals, with large openings that are widely separated from each other (Ref. 57075). Unicuspid outer and inner teeth on both jaws; outer teeth arranged in a single regular row; inner teeth smaller than outer teeth, arranged in three to six irregular rows on anterior part of upper jaw (Ref. 57075). Presence of 2 scale rows between upper and lower lateral lines (Ref. 57075). Scales ctenoid on flank; cheek scaled; dorsal and anal fins with scales at base; caudal fin with small scales anteriorly on fin membranes between rays; paired fins without scales (Ref. 57075). Upper lateral line high on body with 21-25 scales, lower lateral line running along body axis with 11-16 scales, two pored scales anteriorly on caudal fin (Ref. 57075).
The mouth is very protrusable which favor the idea of a planktonic diet (Ref. 7343).
Life cycle and mating behavior
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Mouthbrooding by females.
van Oijen, M.J.P., J. Snoeks, P.H. Skelton, C. Maréchal and G.G. Teugels, 1991. Haplochromis. p. 100-184. In J. Daget, J.-P. Gosse, G.G. Teugels and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels; MRAC, Tervuren; and ORSTOM, Paris. Vol. 4. (Ref. 4983)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2024-1)
Menace pour l'homme
Harmless
Utilisations par l'homme
Outils
Articles particuliers
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Sources Internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01445 (0.00674 - 0.03099), b=2.99 (2.82 - 3.16), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Niveau trophique (Ref.
69278): 3.4 ±0.45 se; based on food items.
Résilience (Ref.
120179): Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (12 of 100).
